C. How does noise affect concentration and memory?
Explanation:
By rephrasing the research in this way, you would be able to encourage yourself to ask questions rather than simply collect information. When you employ the first question, you are focusing on students and loud music only. This will allow you to research this specific situation, but would most likely not lead you to many other questions. However, by rephrasing the question, you open the door to many more possible questions and possible topics of research.
The words "noise, concentration, and memory" open to entire new topics from which many more questions can be formulated and create an entire research to later on answering the main question. The name of the topic can be later on narrowed, and specify it goes towards students studying while playing loud music, therefore the correct answer is option C.
